Deck : Rules of the Road - 1575/1025
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| « Previous Question |
| BOTH INTERNATIONAL & INLAND You are heading due east (090°) and observe a vessel's red sidelight on your port beam. Which direction may the vessel be heading? |
| A) southeast (135°) |
| B) northeast (045°) |
| C) southwest (225°) |
| D) northwest (315°) |
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| Comments |
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| RickC137 - 2020-06-12 14:33:37 Expired Member (3) |
| The reciprocal of your course is 270. If the other vessel is on your beam on course 315, that is a 45 degree difference. The sideight would only show 22.5 aft of the beam. Anything more than 22.5 degree difference and your looking at a stern light. Only way to see both sidelights would be if the orher vessel was on course 180. |
| JeffR - 2019-06-23 12:04:38 Member (1) |
| SW (225 deg) is the correct answer. I draw pictures on a maneuvering board to help. But you can think of it this way: If you are meeting another vessel in a red to red, or port to port meeting situation, the other vessel is going in an almost opposite direction. In this case the other vessel would be travelling on a course as close to 270 deg as the answer allows. If the other vessel was travelling NW you would not see red light, only a stern light. Draw it out and remember your Arc of Visibilities. I hope this helps. |
| Rad1687 - 2019-04-23 10:55:14 Member (3) |
| So which is the correct answer? NW or SW? |
| Patrickg - 2019-04-02 08:25:37 Member (2) |
| It should be northwest. If it was southwest you would observe both sidelights. |
| gibbo8489 - 2019-03-26 08:55:20 Member (2) |
| This is terrible. Why is it not NW? |
| ncalcamu - 2016-01-04 17:59:04 Member (5) |
| no comments |
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